CN205271407U

CN205271407U - Tool and die steel production line

Info

Publication number: CN205271407U
Application number: CN201521066052.5U
Authority: CN
Inventors: 唐辉
Original assignee: Chongqing Maituo Technology Co Ltd
Current assignee: Anhui Sinosteel Nuotai Engineering Technology Co Ltd
Priority date: 2015-12-19
Filing date: 2015-12-19
Publication date: 2016-06-01
Anticipated expiration: 2025-12-19

Abstract

The utility model relates to a tool and die steel production line, including heating device, roughing rolling unit, finishing mill group, steel cutting apparatus, sideslip rack, abrasive -disk cutter and the collection rack that sets gradually, just the finishing mill group comprises flat rolling mill and the vertical rolling mill who arranges in turn. The blank is sent to the sideslip rack after heating, roughing, finish rolling, cut off the specification that formation needs in the abrasive -disk cutter position to finally placed and collected on the rack. The finishing mill group number comprises flat rolling mill and the vertical rolling mill who arranges in turn, therefore the blank has obtained more abundant rolling extrusion in finishing mill group department, and the crystalline grain of inside becomes more tiny, therefore the tool and die steel surface accuracy that obtains and properties of product and lumber recovery are just also higher.

Description

Tool and die steel production line

Technical Field

The utility model relates to a metallurgical manufacturing technology field, in particular to tool and die steel production line.

Background

As is known, a tool and a die are known as a "parent material of modern industry", which can sufficiently reflect the importance and non-wear contribution of the tool and the die in the modern industry, and tool and die steel is the most important component of the tool and the die and is also the most widely used material in die materials.

At present, in iron and steel production enterprises, the production of tool and die steel mainly adopts a forging production mode, but the tool and die steel produced by adopting the mode has the defects of low surface quality, unstable product performance, low yield, low production efficiency and the like.

Therefore, how to provide a production line of tool and die steel to improve the surface precision, product performance and yield of the tool and die steel is a technical problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a tool and die steel production line to prick and replace forging, reach the effect that improves tool and die steel surface accuracy and produce property ability and lumber recovery.

In order to achieve the above object, the utility model provides a tool and die steel production line is including the heating device, the roughing mill group, steel cutting device, finishing mill group, sideslip rack, abrasive wheel saw and the collection rack that set gradually, just the finishing mill group comprises the planishing mill and the edger that arrange in turn.

Preferably, the roughing train is also formed by alternately arranged flat rolling mills and vertical rolling mills.

Preferably, the number of rolling mills in the roughing mill train is 4 to 8.

Preferably, the number of rolling mills in the finishing mill group is 6-10.

Preferably, the high-pressure water descaling device is arranged between the heating device and the roughing mill group.

Preferably, the heating device is a heating furnace, a blank charging conveying device is further arranged at an inlet of the heating furnace, and a blank discharging conveying device is arranged at an outlet of the heating furnace.

Preferably, the device further comprises a slow cooling pit which is arranged behind the collecting rack and is used for slowly cooling the finished product.

Preferably, each rolling mill in the roughing mill group and the finishing mill group is provided with a plurality of rolling stations with the same number side by side in the transverse direction.

Therefore, the utility model discloses an among the tool and die steel production line, included heating device, roughing mill group, finishing mill group, sideslip rack, abrasive wheel saw and collected the rack to finishing mill group comprises the planishing mill and the vertical rolling mill of arranging in turn. The billet is sent to a transverse moving rack after being heated, roughly rolled and finely rolled, is cut into required specifications at the position of a grinding wheel saw, and is finally placed on a collecting rack. The finishing mill group number is composed of flat mills and vertical mills which are alternately arranged, so that the blank is more fully rolled and extruded at the finishing mill group, the internal crystal grains become finer, and the surface precision, the product performance and the yield of the obtained tool and die steel are higher.

Drawings

FIG. 1 is a schematic view of a part of the structure of a tool and die steel production line disclosed in an embodiment of the present invention;

FIG. 2 is a schematic diagram of the roughing train of FIG. 1;

fig. 3 is a schematic view of the structure of the finishing train of fig. 1.

Wherein,

1 is a heating device, 2 is a high-pressure water descaling device, 3 is a steel shearing device, 5 is a roughing mill group, 7 is a finishing mill group, 8 is a transverse moving rack, 9 is a grinding wheel saw, and 10 is a collecting rack.

Detailed Description

The core of the utility model is to provide a tool and die steel production line to reach the effect that improves tool and die steel quality.

In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description.

Referring to fig. 1, in the production line of die steel disclosed in the embodiment of the present invention, the production line includes a heating device 1, a roughing mill group 5, a steel shearing device 3, a finishing mill group 7, a traverse rack 8, a wheel saw 9, and a collecting rack 10, which are sequentially arranged, and the finishing mill group 7 is composed of a flat rolling mill and a vertical rolling mill which are alternately arranged.

It should be noted that, the present invention relates to a flat rolling mill, and more particularly to a rolling mill in which the rollers are arranged horizontally, i.e. the axes of the rollers are located in the horizontal plane, and a vertical rolling mill, i.e. the axes of the rollers are located in the vertical plane.

Qualified blanks are heated by a heating device at first and then enter a roughing mill group 5 for roughing rolling, the roughing mill group 5 mainly plays a role of primarily shaping the shape of the tool and die steel to enable the tool and die steel to generate initial deformation so as to prepare for a subsequent finishing rolling process, the blanks are finished into a required specification in a finishing mill group 7, then the blanks are transversely moved and grouped at a transverse moving rack 8 to wait for being sawn into the required length specification by a grinding wheel saw 9, and the sawed tool and die steel is finally conveyed to a collecting rack 10.

The finished product specification can be directly output from a rough rolling mill group or a finishing rolling mill group, and the product organization is more flexible.

As can be seen, in the production line of the die steel disclosed in the above embodiment, the billet is heated, rough rolled, and finish rolled, and then sent to the traverse table, cut into a desired specification at the position of the abrasive wheel saw 9, and finally placed on the collection table 10. Because the finishing mill group 7 is composed of the flat rolling mills and the vertical rolling mills which are alternately arranged, the blank is more fully rolled and extruded at the finishing mill group 7, the internal crystal grains become finer, and the surface precision, the product performance and the yield of the obtained tool and die steel are higher.

As shown in fig. 2 and 3, in order to further optimize the technical solution in the above embodiment, the roughing mill train 5 in this embodiment is also composed of flat mills and vertical mills which are alternately arranged, after the blank enters the roughing mill train 5, the blank is subjected to alternate rolling forces on the upper, lower, left and right sides, and the grains forming the blank are crushed into finer grains under the rolling forces, which provides a basis for rolling high-quality tool and die steel, when the blank enters the finishing mill group 7 through the rough mill group 5, the growth trend of the crystal grains of the blank is destroyed in time, and the grains are crushed again to form finer grains, while for steel, a smaller grain structure means higher mechanical strength, therefore the utility model discloses a tool and die steel production line can effectively improve tool and die steel's size precision and performance.

In order to ensure the rolling quality and size of the billet, the number of rolling mills in the roughing train 5 is preferably 4 to 8, the number of rolling mills in the roughing train 5 is preferably 6 as shown in fig. 2, the number of rolling mills in the finishing train 7 is preferably 6 to 10, and the number of rolling mills in the finishing train 7 is preferably 9 as shown in fig. 3.

It will be readily understood by those skilled in the art that steel blanks at high temperatures are easily oxidized in air and form a dense scale on their surface, i.e. scale, which is pressed into the tool and die steel during rolling without being removed before rolling, which seriously affects the quality of the tool and die steel, and for this purpose a high pressure water descaling device 2 is provided between the heating device 1 and the roughing train 5. The scale formed on the surface of the blank can be effectively removed through the high-pressure water descaling device 2, so that the influence of the scale on the quality of the tool and die steel is effectively avoided.

In order to further improve the automation degree of the whole production line of the tool and die steel, the heating device 1 in the embodiment specifically adopts a heating furnace, a blank feeding conveying device is further arranged at the inlet of the heating furnace, and a blank discharging conveying device is further arranged at the outlet of the heating furnace.

The tool and die steel is divided into flat steel and round steel, and in order to ensure that the blank can be smoothly fed into the roughing mill group 5 after being output from the heating device, a guiding device matched with the tool and die steel in shape is arranged at the inlet of the roughing mill group 5 and the inlet of the finishing mill group 7 in the embodiment.

In order to make the rolling work smooth and reduce the occurrence of accidents and the processing time after the accidents, the blank is sent out of the roughing mill group 5 and enters the shearing part of the steel shearing device 3 to be cut into sections with smaller length, so that the finished product can be marshalled on the transverse moving rack 8.

In order to further optimize the scheme and ensure the quality of the tool and die steel, a slow cooling pit is further arranged behind the collecting rack 10 in the embodiment, the slow cooling pit can ensure the slow cooling of a product, and the stress concentration caused by the rapid temperature reduction is avoided, so that the internal defect of the tool and die steel is effectively avoided.

Furthermore, a cogging mill may be provided before the roughing train 5 to pre-roll the ingot to a desired gauge, or even directly to a finished gauge.

In view of the demand that further improves production efficiency, the embodiment of the utility model provides a scheme is still provided, in this scheme, each rolling mill in roughing mill group 5 and finishing mill group 7 all is provided with the rolling station that a plurality of quantity are unanimous side by side on horizontal, and this just makes the production efficiency of whole tool and die steel obtain the promotion of doubling. Of course, the subsequent devices such as the traversing carriage 8, the abrasive wheel saw 9 and the collecting carriage 10 need to be modified accordingly in order to match the multi-station roughing mill group 5 and the finishing mill group 7.

It is right above the utility model provides a tool and die steel production line has carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The production line of the tool and die steel is characterized by comprising a heating device (1), a roughing mill group (5), a steel shearing device (3), a finishing mill group (7), a transverse moving rack (8), a grinding wheel saw (9) and a collecting rack (10) which are sequentially arranged, wherein the finishing mill group (7) consists of a flat rolling mill and a vertical rolling mill which are alternately arranged.

2. Tool and die steel production line according to claim 1, characterised in that the roughing train (5) also consists of flat and vertical rolling mills arranged alternately.

3. Tool and die steel production line according to claim 2, characterised in that the number of rolling mills in the roughing train (5) is 4-8.

4. Tool and die steel production line according to claim 2, characterised in that the number of rolling mills in the finishing mill group (7) is 6-10.

5. The tool and die steel production line according to claim 1, further comprising a high pressure water descaling device (2) arranged between the heating device (1) and the roughing train (5).

6. The tool and die steel production line according to claim 1, wherein the heating device (1) is a heating furnace, and a blank feeding conveying device is further arranged at an inlet of the heating furnace, and a blank discharging conveying device is arranged at an outlet of the heating furnace.

7. The tool and die steel production line of claim 1, further comprising a slow cooling pit disposed after the collection gantry (10) and used for slow cooling of the finished product.

8. Production line for tool and die steel according to claim 1, characterised in that each rolling mill of the roughing mill group (5) and the finishing mill group (7) is provided with a plurality of rolling stations of uniform number laterally side by side.